GNU bug report logs - #34798
27.0.50; xclip issue in tramp mode

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From: Ergus <spacibba <at> aol.com>
To: Stefan Monnier <monnier <at> IRO.UMontreal.CA>
Cc: 34798 <at> debbugs.gnu.org
Subject: bug#34798: 27.0.50; xclip issue in tramp mode
Date: Tue, 12 Mar 2019 23:44:11 +0100

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Hi.

Yes, I just tried your changes and it looks to be working fine now.

On the other hand it looks like there is a bug or undocumented/unclear feature in the process-file function.

A special comment should be added in all the external process call functions to clarify whats the expected behaviour in tramp mode.

Does it makes sense?


On 11 March 2019 21:16:00 CET, Stefan Monnier <monnier <at> IRO.UMontreal.CA> wrote:
>Ergus <spacibba <at> aol.com> writes:
>
>> Hi:
>>
>> There is an issue in xclip-mode when using tramp
>>
>> emacs -q -nw
>> C-x C-f /ssh:user <at> host:file RET
>> M-x load-file RET xclip.el RET
>> M-x xclip-mode RET
>> abcd C-SPC C-a M-w C-e RET   <-1
>> C-y                          <-2
>> RET                          <-3
>> C-y M-y RET                  <-4
>> S-C-v                        <-5
>>
>> Produces this output:
>> abcd                         <-1
>> sh: xclip: command not found <-2
>
>Duh!  I pushed the patch below which seems to fix it for me.
>
>> abcd                         <-4
>> abcd                         <-5
>>
>> As you can see the 2) yanks the error message including a new line.
>> But 4) (emacs yank + yank-pop) yanks the text and 5 (xterm-paste)
>too.
>
>I think these were side-effects of the previous problem.
>xclip-1.8 (to appear soonish) will include this fix.
>
>        Stefan
>
>
>diff --git a/packages/xclip/xclip.el b/packages/xclip/xclip.el
>index b142475b5..b1686e14d 100644
>--- a/packages/xclip/xclip.el
>+++ b/packages/xclip/xclip.el
>@@ -1,6 +1,6 @@
>;;; xclip.el --- Copy&paste GUI clipboard from text terminal  -*-
>lexical-binding:t -*-
> 
>-;; Copyright (C) 2007, 2012, 2013, 2017, 2018  Free Software
>Foundation, Inc.
>+;; Copyright (C) 2007-2019  Free Software Foundation, Inc.
> 
> ;; Author: Leo Liu <sdl.web <at> gmail.com>
> ;; Keywords: convenience, tools
>@@ -144,21 +144,21 @@ See also `x-set-selection'."
>       (pcase xclip-method
>         (`pbpaste
>          (when (memq type '(clipboard CLIPBOARD))
>-           (process-file xclip-program nil standard-output nil
>+           (call-process xclip-program nil standard-output nil
>                          "-Prefer" "txt")))
>         (`getclip
>          (when (memq type '(clipboard CLIPBOARD))
>-           (process-file xclip-program nil standard-output nil)))
>+           (call-process xclip-program nil standard-output nil)))
>         (`xclip
>          (when (getenv "DISPLAY")
>-           (process-file xclip-program nil standard-output nil
>+           (call-process xclip-program nil standard-output nil
>                          "-o" "-selection" (symbol-name type))))
>         (`xsel
>          (when (and (getenv "DISPLAY")
>                     (memq type '(clipboard CLIPBOARD
>                                  primary PRIMARY
>                                  secondary SECONDARY)))
>-           (process-file xclip-program nil standard-output nil
>+           (call-process xclip-program nil standard-output nil
>                    "-o" (concat "--" (downcase (symbol-name type))))))
>         (method (error "Unknown `xclip-method': %S" method))))))
> 
>@@ -281,7 +281,7 @@ Emacs-NN and is then later run by Emacs>NN."
>       (or clip-text
>       (when (and (memq xclip-method '(xsel xclip)) (getenv "DISPLAY"))
>             (let ((primary-text (with-output-to-string
>-                                  (process-file xclip-program nil
>+                                  (call-process xclip-program nil
>                                           standard-output nil "-o"))))
>               (setq primary-text
>                     (cond               ; Check primary selection.

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